"use strict";
const path = require("path");
const { defineConfig } = require("@vue/cli-service");

function resolve(dir) {
  return path.join(__dirname, dir);
}

module.exports = defineConfig({
  transpileDependencies: true,
  publicPath: "./",
  outputDir: "dist",
  assetsDir: "",
  lintOnSave: process.env.NODE_ENV === "development",
  productionSourceMap: false,
  devServer: {
    port: 8888,
    open: true,
    proxy: {
      "/api": {
        target: process.env.VUE_APP_BASE_URL,
        changeOrigin: true,
        pathRewrite: {
          "^/api": "",
        },
      },
    },
  },
  configureWebpack: {
    // 在webpack的name字段中提供应用的标题，以便可以在index.html中访问它以注入正确的标题。
    name: process.env.TITLE,
    resolve: {
      alias: {
        "@": resolve("src"),
      },
      fallback: {
        path: require.resolve("path-browserify"),
      },
    },
  },
  chainWebpack(config) {
    // 设置svg-loader
    config.module.rule("svg").exclude.add(resolve("src/icons")).end();
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]",
      })
      .end();

    config.when(process.env.NODE_ENV !== "development", (config) => {
      config.optimization.splitChunks({
        chunks: "all",
        cacheGroups: {
          libs: {
            name: "chunk-libs",
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: "initial", // only package third parties that are initially dependent
          },
          elementUI: {
            name: "chunk-elementUI", // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/, // in order to adapt to cnpm
          },
          commons: {
            name: "chunk-commons",
            test: resolve("src/components"), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true,
          },
        },
      });
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk("single");
    });
  },
});
